/**
 * @author michael
 * @version 0.1.0.0 05.10.2006
 */
package at.tac.ra.ng.ejb.bl.login;

import at.tac.ra.ng.ejb.beans.user.User;
import at.tac.ra.ng.ejb.entities.UserEntity;
import at.tac.ra.ng.ejb.entities.LanguageEntity;
import at.tac.ra.ng.common.HashGen;
import at.tac.ra.ng.common.SysConfig;

import javax.ejb.Stateless;
import javax.ejb.Remote;
import javax.ejb.EJB;
import javax.persistence.PersistenceException;
import javax.persistence.PersistenceContext;
import javax.persistence.EntityManager;
import java.util.Calendar;
import java.security.NoSuchAlgorithmException;

@Stateless(name = "LoginEJB")
@Remote(Login.class)
public class LoginBean implements Login {
 @PersistenceContext
 EntityManager em;
 @EJB
 User userBean;
 public loginStatus authenticateUser(String userLogin, char[] password) {
 if (userBean.findByUserLogin(userLogin).size() <= 0) {
 return loginStatus.USERLOGIN_DOES_NOT_EXIST;
 }
 UserEntity user;
 try {
 user = userBean.findByUserLoginEnabled(userLogin);
 } catch (PersistenceException e) {
 return loginStatus.NO_ENABLED_USER_FOUND_WITH_THIS_USERLOGIN;
 }
 Calendar c = Calendar.getInstance();
 if ((user.getReactivationTime() != null) && (c.getTime().getTime() < user.getReactivationTime().getTime())) {
 //Account temporary locked
 return loginStatus.ACCOUNT_TEMPORARY_LOCKED;
 } else {
 // Account not temporary locked
 try {
 if (user.getPassword().equals(HashGen.do_checksum(String.valueOf(password), "SHA-1"))) {
 // Password is correct
 user.setLoginTrials(0);
 user.setReactivationTime(null);
 em.flush();
 return loginStatus.SUCCESS;
 } else {
 // Password is wrong
 user.setLoginTrials(user.getLoginTrials() + 1);
 if (user.getLoginTrials() > SysConfig.getAllowedLoginTrials()) {
 Calendar c2 = Calendar.getInstance();
 c.add(Calendar.MINUTE, SysConfig.getLoginLockTime());
 user.setReactivationTime(c.getTime());
 }
 em.flush();
 return loginStatus.WRONG_PASSWORD;
 }
 } catch (NoSuchAlgorithmException e) {
 e.printStackTrace();
 return loginStatus.UNKNOWN_ERROR;
 }
 }
 }


 public UserEntity getUser(String userLogin) {
 return userBean.findByUserLoginEnabled(userLogin);
 }

 public LanguageEntity getLanguage(UserEntity user, Integer languageID) {
 if (languageID == null) {
 em.persist(user);
 return user.getLanguage();
 } else {
 return em.find(LanguageEntity.class, languageID);
 }
 }
}

The above code produces a NullPointerException on "If (userBean.findByUserLogin(userLogin).size() <= 0)" because userBean is null.
Shouldn't a reference to UserEJB be injected there or am I missing something?

nomike aka Michael Postmann